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A 60.0-kg skier coasts up a snow-covered hill that makes an angle of 23.5 ° with...

A 60.0-kg skier coasts up a snow-covered hill that makes an angle of 23.5 ° with the horizontal. The initial speed of the skier is 9.17 m/s. After coasting a distance of 1.45 m up the slope, the speed of the skier is 3.65 m/s. (a) Find the work done by the kinetic frictional force that acts on the skis. (b) What is the magnitude of the kinetic frictional force?

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